US3780212A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color filter and single tube color television camera system utilizing same
Assignee: CBS Broadcasting Inc
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Filing: 1972-08-30
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Granted: 1973-12-18
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Expires: 1992-08-30
Abstract
Abstract A system for generating three coherent color component signals representative of the color content of a scene. A color stripe filter is disposed in the optical path of the scene, the filter having three sets of parallel stripes, each set having a different characteristic color and a different orientation in the plane perpendicular to the optical path. Means are provided for electronically scanning the image projected through the filter in a line pattern and for generating signals representative of the filtered image. Delay means responsive to the output of the scanning means simultaneously derive first, second, and third video signals generated during three successive scanlines. Further provided are first, second, and third combining means, each of which combines the three video signals in a different phased relationship to generate one of the coherent color component signals. In a preferred embodiment of the invention, yellow, cyan, and magenta colored stripes are utilized to derive the red, green and blue primary color signals.
Inventors
- 👤 W Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:06
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/10; H04N23/12
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
131 words
A system for generating three coherent color component signals representative of the color content of a scene, comprising: a color stripe filter disposed in the optical path of the scene, said filter having three sets of parallel stripes, each set having a different characteristic color and a different orientation in the plane perpendicular said path; means for electronically scanning the image projected through said filter in a line pattern and for generating signals representative of the filtered image; delay means responsive to the output of said scanning means for simultaneously deriving first, second, and third video signals generated during three successive scanlines; and first, second and third combining means, each of which combines the three video signals in a different phase relationship to generate one of the coherent color component signals.
Claim 2
Independent Claim
131 words
A system for generating three coherent color component signals representative of the color content of a scene, comprising: a color stripe filter disposed in the optical path of the scene, said filter having three sets of parallel stripes, each set having a different characteristic color and a different orientation in the plane perpendicular said path; means for electronically scanning the image projected through said filter in a line pattern and for generating signals representative of the filtered image; delay means responsive to the output of said scanning means for simultaneously deriving first, second, and third video signals generated during three successive scanlines; and first, second and third combining means, each of which combines the three video signals in a different phase relationship to generate one of the coherent color component signals.
Claim 3
Dependent Claim
31 words
A system in accordance with claim 1 wherein each of said combining means adds the three video signals in a different phase relationship to generate one of the color component signals.
Claim 4
Dependent Claim
64 words
A system in accordance with claim 1 wherein the orientation of one of said sets of stripes is such that the scanning of said one set of stripes on a particular line produces a video signal component that is shifted in phase by +120* with respect to the video signal component produced when said one set of stripes is scanned on the next line.
Claim 5
Dependent Claim
65 words
A system in accordance with claim 3 wherein the orientation of a second of said sets of stripes is such that the scanning of said second set of stripes on said particular line produces a video signal component that is shifted in phase by -120* with respect to the video signal component produced when said second set of stripes is scanned on said next line.
Claim 6
Dependent Claim
62 words
A system in accordance with claim 4 wherein the orientation of the third of said sets of stripes is such that the scanning of said third set of stripes on said particular line produces a video signal component that is in phase with respect to the video signal component produced when said third set of stripes is scanned on said next line.
Claim 7
Dependent Claim
32 words
A system in accordance with claim 2 wherein said delay means comprises two delay lines, each of which provides a delay of 120* less then the duration of a full horizontal scanline.
Claim 8
Dependent Claim
43 words
A system in accordance with claim 2 wherein said first combining means adds said first, second and third video signals in phase, and said second combining means adds said first, second and third video signals in phase relationships that are multiples of 120*.
Claim 9
Dependent Claim
28 words
A system in accordance with claim 7 wherein said third combining means adds said first, second and third video signals in phase relationships that are multiples of 240*.
Claim 10
Dependent Claim
22 words
A system in accordance with claim 1 further comprising means for filtering the signals from said scanning means to produce luminance signals.
Claim 11
Dependent Claim
18 words
A system in accordance with claim 1 wherein the three stripe set colors are yellow, cyan and magenta.
Claim 12
Independent Claim
126 words
A system for generating three coherent color component signals from a composite image having a first color spatially modulated in a stripe pattern with a first orientation, a second color spatially modulated in a stripe pattern with a second orientation, and a third color spatially modulated in a stripe pattern with a third orientation, comprising: means for scanning said image in a line pattern and for generating signals representative of the scanned image; delay means responsive to the output of said scanning means for simultaneously deriving first, second and third video signals generated during three successive scanlines; and first, second and third combining means, each of which combines the three video signals in a different phased relationship to generate one of the coherent color component signals.
Claim 13
Independent Claim
126 words
A system for generating three coherent color component signals from a composite image having a first color spatially modulated in a stripe pattern with a first orientation, a second color spatially modulated in a stripe pattern with a second orientation, and a third color spatially modulated in a stripe pattern with a third orientation, comprising: means for scanning said image in a line pattern and for generating signals representative of the scanned image; delay means responsive to the output of said scanning means for simultaneously deriving first, second and third video signals generated during three successive scanlines; and first, second and third combining means, each of which combines the three video signals in a different phased relationship to generate one of the coherent color component signals.
Claim 14
Dependent Claim
31 words
A system in accordance with claim 11 wherein each of said combining means adds the three video signals in a different phase relationship to generate one of the color component signals.
Claim 15
Dependent Claim
32 words
A system in accordance with claim 12 wherein said delay means comprises two delay lines, each of which provides a delay of 120* less than the duration of a full horizontal scanline.
Claim 16
Dependent Claim
43 words
A system in accordance with claim 12 wherein said first combining means adds said first, second and third video signals in phase, and said second combining means adds said first, second and thirD video signals in phase relationships that are multiples of 120*.
Claim 17
Dependent Claim
28 words
A system in accordance with claim 14 wherein said third combining means adds said first, second and third video signals in phase relationships that are multiples of 240*.
Claim 18
Dependent Claim
22 words
A system in accordance with claim 11 further comprising means for filtering the signals from said scanning means to produce luminance signals.
Claim 19
Dependent Claim
17 words
A system in accordance with claim 11 wherein the three modulating colors are yellow, cyan and magenta.
Claim 20
Dependent Claim
120 words
A color encoding filter suitable to be disposed in the optical path between a scene and a means for deriving the light content from the scene, comprising: a first set of mutually parallel stripes of a first color and having a first orientation in the plane perpendicular said path; a second set of mutually parallel stripes of a second color and having a second orientation in said plane, said second orientation being at an angle of about 24.7* with respect to said first orientation; and a third set of mutually parallel stripes of a third color and having a third orientation in said plane, said third orientation being at an angle of about -24.7* with respect to said first orientation.
Claim 21
Dependent Claim
120 words
A color encoding filter suitable to be disposed in the optical path between a scene and a means for deriving the light content from the scene, comprising: a first set of mutually parallel stripes of a first color and having a first orientation in the plane perpendicular said path; a second set of mutually parallel stripes of a second color and having a second orientation in said plane, said second orientation being at an angle of about 24.7* with respect to said first orientation; and a third set of mutually parallel stripes of a third color and having a third orientation in said plane, said third orientation being at an angle of about -24.7* with respect to said first orientation.
References Cited (Backward Citations)
US3702725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |